------- Comment #34 from mikpe at it dot uu dot se 2010-04-12 19:03 -------
Created an attachment (id=20371)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20371&action=view)
eliminate use of _Unwind_GetRegionStart on ARM, take 2
The previous patch to eliminate _Unwind_GetRegionStart on ARM suffered from
major misalignment exceptions. The function pointers in the @LPStart fields
weren't resolved by the linker but apparently required runtime fixup by glibc.
Since they are always misaligned (the LSDA blob starts aligned with a format
byte followed by the @LPStart pointer), each @LPStart value resulted in two
alignment exceptions. Ouch.
The new version of the patch makes the @LPStart pointers PC-relative which
eliminates the runtime fixups and thus the alignment exceptions.
--
mikpe at it dot uu dot se changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #20333|0 |1
is obsolete| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40860
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